S-94705A735 1/2"-13 x 5 1/4" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional tensile strength of 125,000 PSI ensures reliable performance under extreme loads, reducing the risk of fastener failure in critical applications.
• High hardness rating (Rockwell C35) provides superior resistance to wear and deformation, extending service life in abrasive environments.
• Partially threaded design with a 4" grip length offers optimal clamping force distribution, ideal for assemblies requiring precise unthreaded shank engagement.
• Coarse UNC threading with Class 2A fit enables quick and easy installation while maintaining secure fastening, minimizing assembly time.
• External hex drive and standard 7/8" head width allow for high torque application using common tools, ensuring tight and consistent installations.
• Manufactured from high-grade steel to ASTM A193 specifications, guaranteeing consistent material properties and compliance with industrial standards.
• Right-hand thread direction provides standard, intuitive tightening for efficient maintenance and replacement procedures.

Professional Applications & Engineering Value

This ASTM Grade B7 hex head screw is engineered to address the demanding requirements of industrial and high-pressure applications, such as pressure vessels, valve assemblies, and structural supports. The steel construction combined with a Rockwell C35 hardness ensures durability against vibrational loosening and environmental stressors. Its partially threaded design with a 1 1/4" thread length and coarse UNC thread provides superior grip and resistance to shear forces, making it ideal for heavy-duty fastening where reliability is critical. By meeting ASTM A193 specifications, this fastener delivers consistent performance, reducing downtime and maintenance costs in engineering systems.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and a 1/2"-13 UNC coarse thread with right-hand direction. It is manufactured in compliance with ASTM A193 for material and performance requirements, ensuring reliability in industrial applications. The product meets common regulatory standards for industrial use, providing assurance of quality and safety in critical environments.